Home / 7,427.36-11,139.80-2,749.58

Finding the Fourth Proportional to 7,427.36, 11,139.80 and 2,749.58

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Solution

The fourth proportional to 7,427.36, 11,139.80 and 2,749.58 is: 4,123.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,427.36 : 11,139.80 = 2,749.58 : x
  2. Step 2: Convert to fraction form
    7,427.36/11,139.80 = 2,749.58/x
  3. Step 3: Cross multiply
    7,427.36x = 11,139.80 × 2,749.58
  4. Step 4: Simplify right side
    7,427.36x = 30,629,771.28
  5. Step 5: Solve for x
    x = 30,629,771.28/7,427.36
  6. Step 6: Final answer
    x = 4,123.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.